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-rw-r--r--SOURCES/0001-drm-panel-rocktech-jh057n00900-Rename-the-driver-to-.patch948
1 files changed, 948 insertions, 0 deletions
diff --git a/SOURCES/0001-drm-panel-rocktech-jh057n00900-Rename-the-driver-to-.patch b/SOURCES/0001-drm-panel-rocktech-jh057n00900-Rename-the-driver-to-.patch
new file mode 100644
index 0000000..d78bf56
--- /dev/null
+++ b/SOURCES/0001-drm-panel-rocktech-jh057n00900-Rename-the-driver-to-.patch
@@ -0,0 +1,948 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ondrej Jirman <megous@megous.com>
+Date: Fri, 26 Jun 2020 02:55:52 +0200
+Subject: [PATCH] drm/panel: rocktech-jh057n00900: Rename the driver to st7703
+
+This rename is done so that the driver matches the name of the
+display controller and in preparation for adding support for more
+panels to the driver.
+
+This is just a basic file rename, with no code changes.
+
+Signed-off-by: Ondrej Jirman <megous@megous.com>
+---
+ drivers/gpu/drm/panel/Kconfig | 26 +-
+ drivers/gpu/drm/panel/Makefile | 2 +-
+ .../drm/panel/panel-rocktech-jh057n00900.c | 424 ------------------
+ drivers/gpu/drm/panel/panel-sitronix-st7703.c | 424 ++++++++++++++++++
+ 4 files changed, 438 insertions(+), 438 deletions(-)
+ delete mode 100644 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+ create mode 100644 drivers/gpu/drm/panel/panel-sitronix-st7703.c
+
+diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
+index 39055c1f0e2f..de2f2a452be5 100644
+--- a/drivers/gpu/drm/panel/Kconfig
++++ b/drivers/gpu/drm/panel/Kconfig
+@@ -283,19 +283,6 @@ config DRM_PANEL_RAYDIUM_RM68200
+ Say Y here if you want to enable support for Raydium RM68200
+ 720x1280 DSI video mode panel.
+
+-config DRM_PANEL_ROCKTECH_JH057N00900
+- tristate "Rocktech JH057N00900 MIPI touchscreen panel"
+- depends on OF
+- depends on DRM_MIPI_DSI
+- depends on BACKLIGHT_CLASS_DEVICE
+- help
+- Say Y here if you want to enable support for Rocktech JH057N00900
+- MIPI DSI panel as e.g. used in the Librem 5 devkit. It has a
+- resolution of 720x1440 pixels, a built in backlight and touch
+- controller.
+- Touch input support is provided by the goodix driver and needs to be
+- selected separately.
+-
+ config DRM_PANEL_RONBO_RB070D30
+ tristate "Ronbo Electronics RB070D30 panel"
+ depends on OF
+@@ -395,6 +382,19 @@ config DRM_PANEL_SITRONIX_ST7701
+ ST7701 controller for 480X864 LCD panels with MIPI/RGB/SPI
+ system interfaces.
+
++config DRM_PANEL_SITRONIX_ST7703
++ tristate "Sitronix ST7703 based MIPI touchscreen panels"
++ depends on OF
++ depends on DRM_MIPI_DSI
++ depends on BACKLIGHT_CLASS_DEVICE
++ help
++ Say Y here if you want to enable support for Sitronix ST7703 based
++ panels, souch as Rocktech JH057N00900 MIPI DSI panel as e.g. used in
++ the Librem 5 devkit. It has a resolution of 720x1440 pixels, a built
++ in backlight and touch controller.
++ Touch input support is provided by the goodix driver and needs to be
++ selected separately.
++
+ config DRM_PANEL_SITRONIX_ST7789V
+ tristate "Sitronix ST7789V panel"
+ depends on OF && SPI
+diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
+index de74f282c433..e45ceac6286f 100644
+--- a/drivers/gpu/drm/panel/Makefile
++++ b/drivers/gpu/drm/panel/Makefile
+@@ -27,7 +27,6 @@ obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
+ obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
+ obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o
+ obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
+-obj-$(CONFIG_DRM_PANEL_ROCKTECH_JH057N00900) += panel-rocktech-jh057n00900.o
+ obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
+ obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
+ obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
+@@ -41,6 +40,7 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
+ obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
+ obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
+ obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
++obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
+ obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
+ obj-$(CONFIG_DRM_PANEL_SONY_ACX424AKP) += panel-sony-acx424akp.o
+ obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
+diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+deleted file mode 100644
+index 38ff742bc120..000000000000
+--- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
++++ /dev/null
+@@ -1,424 +0,0 @@
+-// SPDX-License-Identifier: GPL-2.0
+-/*
+- * Rockteck jh057n00900 5.5" MIPI-DSI panel driver
+- *
+- * Copyright (C) Purism SPC 2019
+- */
+-
+-#include <linux/debugfs.h>
+-#include <linux/delay.h>
+-#include <linux/gpio/consumer.h>
+-#include <linux/media-bus-format.h>
+-#include <linux/mod_devicetable.h>
+-#include <linux/module.h>
+-#include <linux/regulator/consumer.h>
+-
+-#include <video/display_timing.h>
+-#include <video/mipi_display.h>
+-
+-#include <drm/drm_mipi_dsi.h>
+-#include <drm/drm_modes.h>
+-#include <drm/drm_panel.h>
+-#include <drm/drm_print.h>
+-
+-#define DRV_NAME "panel-rocktech-jh057n00900"
+-
+-/* Manufacturer specific Commands send via DSI */
+-#define ST7703_CMD_ALL_PIXEL_OFF 0x22
+-#define ST7703_CMD_ALL_PIXEL_ON 0x23
+-#define ST7703_CMD_SETDISP 0xB2
+-#define ST7703_CMD_SETRGBIF 0xB3
+-#define ST7703_CMD_SETCYC 0xB4
+-#define ST7703_CMD_SETBGP 0xB5
+-#define ST7703_CMD_SETVCOM 0xB6
+-#define ST7703_CMD_SETOTP 0xB7
+-#define ST7703_CMD_SETPOWER_EXT 0xB8
+-#define ST7703_CMD_SETEXTC 0xB9
+-#define ST7703_CMD_SETMIPI 0xBA
+-#define ST7703_CMD_SETVDC 0xBC
+-#define ST7703_CMD_UNKNOWN0 0xBF
+-#define ST7703_CMD_SETSCR 0xC0
+-#define ST7703_CMD_SETPOWER 0xC1
+-#define ST7703_CMD_SETPANEL 0xCC
+-#define ST7703_CMD_SETGAMMA 0xE0
+-#define ST7703_CMD_SETEQ 0xE3
+-#define ST7703_CMD_SETGIP1 0xE9
+-#define ST7703_CMD_SETGIP2 0xEA
+-
+-struct jh057n {
+- struct device *dev;
+- struct drm_panel panel;
+- struct gpio_desc *reset_gpio;
+- struct regulator *vcc;
+- struct regulator *iovcc;
+- bool prepared;
+-
+- struct dentry *debugfs;
+-};
+-
+-static inline struct jh057n *panel_to_jh057n(struct drm_panel *panel)
+-{
+- return container_of(panel, struct jh057n, panel);
+-}
+-
+-#define dsi_generic_write_seq(dsi, seq...) do { \
+- static const u8 d[] = { seq }; \
+- int ret; \
+- ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
+- if (ret < 0) \
+- return ret; \
+- } while (0)
+-
+-static int jh057n_init_sequence(struct jh057n *ctx)
+-{
+- struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+- struct device *dev = ctx->dev;
+- int ret;
+-
+- /*
+- * Init sequence was supplied by the panel vendor. Most of the commands
+- * resemble the ST7703 but the number of parameters often don't match
+- * so it's likely a clone.
+- */
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETEXTC,
+- 0xF1, 0x12, 0x83);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETRGBIF,
+- 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00,
+- 0x00, 0x00);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETSCR,
+- 0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70,
+- 0x00);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0x30);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETEQ,
+- 0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00,
+- 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETBGP, 0x08, 0x08);
+- msleep(20);
+-
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
+- dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN0, 0x02, 0x11, 0x00);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1,
+- 0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12,
+- 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
+- 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,
+- 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,
+- 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,
+- 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+- 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP2,
+- 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+- 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,
+- 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,
+- 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+- 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,
+- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x0A,
+- 0xA5, 0x00, 0x00, 0x00, 0x00);
+- dsi_generic_write_seq(dsi, ST7703_CMD_SETGAMMA,
+- 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, 0x37,
+- 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, 0x11,
+- 0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41,
+- 0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10,
+- 0x11, 0x18);
+- msleep(20);
+-
+- ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+- if (ret < 0) {
+- DRM_DEV_ERROR(dev, "Failed to exit sleep mode: %d\n", ret);
+- return ret;
+- }
+- /* Panel is operational 120 msec after reset */
+- msleep(60);
+- ret = mipi_dsi_dcs_set_display_on(dsi);
+- if (ret)
+- return ret;
+-
+- DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
+- return 0;
+-}
+-
+-static int jh057n_enable(struct drm_panel *panel)
+-{
+- struct jh057n *ctx = panel_to_jh057n(panel);
+- int ret;
+-
+- ret = jh057n_init_sequence(ctx);
+- if (ret < 0) {
+- DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
+- ret);
+- return ret;
+- }
+-
+- return 0;
+-}
+-
+-static int jh057n_disable(struct drm_panel *panel)
+-{
+- struct jh057n *ctx = panel_to_jh057n(panel);
+- struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+-
+- return mipi_dsi_dcs_set_display_off(dsi);
+-}
+-
+-static int jh057n_unprepare(struct drm_panel *panel)
+-{
+- struct jh057n *ctx = panel_to_jh057n(panel);
+-
+- if (!ctx->prepared)
+- return 0;
+-
+- regulator_disable(ctx->iovcc);
+- regulator_disable(ctx->vcc);
+- ctx->prepared = false;
+-
+- return 0;
+-}
+-
+-static int jh057n_prepare(struct drm_panel *panel)
+-{
+- struct jh057n *ctx = panel_to_jh057n(panel);
+- int ret;
+-
+- if (ctx->prepared)
+- return 0;
+-
+- DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
+- ret = regulator_enable(ctx->vcc);
+- if (ret < 0) {
+- DRM_DEV_ERROR(ctx->dev,
+- "Failed to enable vcc supply: %d\n", ret);
+- return ret;
+- }
+- ret = regulator_enable(ctx->iovcc);
+- if (ret < 0) {
+- DRM_DEV_ERROR(ctx->dev,
+- "Failed to enable iovcc supply: %d\n", ret);
+- goto disable_vcc;
+- }
+-
+- gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+- usleep_range(20, 40);
+- gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+- msleep(20);
+-
+- ctx->prepared = true;
+-
+- return 0;
+-
+-disable_vcc:
+- regulator_disable(ctx->vcc);
+- return ret;
+-}
+-
+-static const struct drm_display_mode default_mode = {
+- .hdisplay = 720,
+- .hsync_start = 720 + 90,
+- .hsync_end = 720 + 90 + 20,
+- .htotal = 720 + 90 + 20 + 20,
+- .vdisplay = 1440,
+- .vsync_start = 1440 + 20,
+- .vsync_end = 1440 + 20 + 4,
+- .vtotal = 1440 + 20 + 4 + 12,
+- .vrefresh = 60,
+- .clock = 75276,
+- .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+- .width_mm = 65,
+- .height_mm = 130,
+-};
+-
+-static int jh057n_get_modes(struct drm_panel *panel,
+- struct drm_connector *connector)
+-{
+- struct jh057n *ctx = panel_to_jh057n(panel);
+- struct drm_display_mode *mode;
+-
+- mode = drm_mode_duplicate(connector->dev, &default_mode);
+- if (!mode) {
+- DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u\n",
+- default_mode.hdisplay, default_mode.vdisplay,
+- default_mode.vrefresh);
+- return -ENOMEM;
+- }
+-
+- drm_mode_set_name(mode);
+-
+- mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+- connector->display_info.width_mm = mode->width_mm;
+- connector->display_info.height_mm = mode->height_mm;
+- drm_mode_probed_add(connector, mode);
+-
+- return 1;
+-}
+-
+-static const struct drm_panel_funcs jh057n_drm_funcs = {
+- .disable = jh057n_disable,
+- .unprepare = jh057n_unprepare,
+- .prepare = jh057n_prepare,
+- .enable = jh057n_enable,
+- .get_modes = jh057n_get_modes,
+-};
+-
+-static int allpixelson_set(void *data, u64 val)
+-{
+- struct jh057n *ctx = data;
+- struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+-
+- DRM_DEV_DEBUG_DRIVER(ctx->dev, "Setting all pixels on\n");
+- dsi_generic_write_seq(dsi, ST7703_CMD_ALL_PIXEL_ON);
+- msleep(val * 1000);
+- /* Reset the panel to get video back */
+- drm_panel_disable(&ctx->panel);
+- drm_panel_unprepare(&ctx->panel);
+- drm_panel_prepare(&ctx->panel);
+- drm_panel_enable(&ctx->panel);
+-
+- return 0;
+-}
+-
+-DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
+- allpixelson_set, "%llu\n");
+-
+-static void jh057n_debugfs_init(struct jh057n *ctx)
+-{
+- ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
+-
+- debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,
+- &allpixelson_fops);
+-}
+-
+-static void jh057n_debugfs_remove(struct jh057n *ctx)
+-{
+- debugfs_remove_recursive(ctx->debugfs);
+- ctx->debugfs = NULL;
+-}
+-
+-static int jh057n_probe(struct mipi_dsi_device *dsi)
+-{
+- struct device *dev = &dsi->dev;
+- struct jh057n *ctx;
+- int ret;
+-
+- ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+- if (!ctx)
+- return -ENOMEM;
+-
+- ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+- if (IS_ERR(ctx->reset_gpio)) {
+- DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
+- return PTR_ERR(ctx->reset_gpio);
+- }
+-
+- mipi_dsi_set_drvdata(dsi, ctx);
+-
+- ctx->dev = dev;
+-
+- dsi->lanes = 4;
+- dsi->format = MIPI_DSI_FMT_RGB888;
+- dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
+- MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
+-
+- ctx->vcc = devm_regulator_get(dev, "vcc");
+- if (IS_ERR(ctx->vcc)) {
+- ret = PTR_ERR(ctx->vcc);
+- if (ret != -EPROBE_DEFER)
+- DRM_DEV_ERROR(dev,
+- "Failed to request vcc regulator: %d\n",
+- ret);
+- return ret;
+- }
+- ctx->iovcc = devm_regulator_get(dev, "iovcc");
+- if (IS_ERR(ctx->iovcc)) {
+- ret = PTR_ERR(ctx->iovcc);
+- if (ret != -EPROBE_DEFER)
+- DRM_DEV_ERROR(dev,
+- "Failed to request iovcc regulator: %d\n",
+- ret);
+- return ret;
+- }
+-
+- drm_panel_init(&ctx->panel, dev, &jh057n_drm_funcs,
+- DRM_MODE_CONNECTOR_DSI);
+-
+- ret = drm_panel_of_backlight(&ctx->panel);
+- if (ret)
+- return ret;
+-
+- drm_panel_add(&ctx->panel);
+-
+- ret = mipi_dsi_attach(dsi);
+- if (ret < 0) {
+- DRM_DEV_ERROR(dev,
+- "mipi_dsi_attach failed (%d). Is host ready?\n",
+- ret);
+- drm_panel_remove(&ctx->panel);
+- return ret;
+- }
+-
+- DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
+- default_mode.hdisplay, default_mode.vdisplay,
+- default_mode.vrefresh,
+- mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
+-
+- jh057n_debugfs_init(ctx);
+- return 0;
+-}
+-
+-static void jh057n_shutdown(struct mipi_dsi_device *dsi)
+-{
+- struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
+- int ret;
+-
+- ret = drm_panel_unprepare(&ctx->panel);
+- if (ret < 0)
+- DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
+- ret);
+-
+- ret = drm_panel_disable(&ctx->panel);
+- if (ret < 0)
+- DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n",
+- ret);
+-}
+-
+-static int jh057n_remove(struct mipi_dsi_device *dsi)
+-{
+- struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
+- int ret;
+-
+- jh057n_shutdown(dsi);
+-
+- ret = mipi_dsi_detach(dsi);
+- if (ret < 0)
+- DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
+- ret);
+-
+- drm_panel_remove(&ctx->panel);
+-
+- jh057n_debugfs_remove(ctx);
+-
+- return 0;
+-}
+-
+-static const struct of_device_id jh057n_of_match[] = {
+- { .compatible = "rocktech,jh057n00900" },
+- { /* sentinel */ }
+-};
+-MODULE_DEVICE_TABLE(of, jh057n_of_match);
+-
+-static struct mipi_dsi_driver jh057n_driver = {
+- .probe = jh057n_probe,
+- .remove = jh057n_remove,
+- .shutdown = jh057n_shutdown,
+- .driver = {
+- .name = DRV_NAME,
+- .of_match_table = jh057n_of_match,
+- },
+-};
+-module_mipi_dsi_driver(jh057n_driver);
+-
+-MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");
+-MODULE_DESCRIPTION("DRM driver for Rocktech JH057N00900 MIPI DSI panel");
+-MODULE_LICENSE("GPL v2");
+diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+new file mode 100644
+index 000000000000..38ff742bc120
+--- /dev/null
++++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+@@ -0,0 +1,424 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Rockteck jh057n00900 5.5" MIPI-DSI panel driver
++ *
++ * Copyright (C) Purism SPC 2019
++ */
++
++#include <linux/debugfs.h>
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/media-bus-format.h>
++#include <linux/mod_devicetable.h>
++#include <linux/module.h>
++#include <linux/regulator/consumer.h>
++
++#include <video/display_timing.h>
++#include <video/mipi_display.h>
++
++#include <drm/drm_mipi_dsi.h>
++#include <drm/drm_modes.h>
++#include <drm/drm_panel.h>
++#include <drm/drm_print.h>
++
++#define DRV_NAME "panel-rocktech-jh057n00900"
++
++/* Manufacturer specific Commands send via DSI */
++#define ST7703_CMD_ALL_PIXEL_OFF 0x22
++#define ST7703_CMD_ALL_PIXEL_ON 0x23
++#define ST7703_CMD_SETDISP 0xB2
++#define ST7703_CMD_SETRGBIF 0xB3
++#define ST7703_CMD_SETCYC 0xB4
++#define ST7703_CMD_SETBGP 0xB5
++#define ST7703_CMD_SETVCOM 0xB6
++#define ST7703_CMD_SETOTP 0xB7
++#define ST7703_CMD_SETPOWER_EXT 0xB8
++#define ST7703_CMD_SETEXTC 0xB9
++#define ST7703_CMD_SETMIPI 0xBA
++#define ST7703_CMD_SETVDC 0xBC
++#define ST7703_CMD_UNKNOWN0 0xBF
++#define ST7703_CMD_SETSCR 0xC0
++#define ST7703_CMD_SETPOWER 0xC1
++#define ST7703_CMD_SETPANEL 0xCC
++#define ST7703_CMD_SETGAMMA 0xE0
++#define ST7703_CMD_SETEQ 0xE3
++#define ST7703_CMD_SETGIP1 0xE9
++#define ST7703_CMD_SETGIP2 0xEA
++
++struct jh057n {
++ struct device *dev;
++ struct drm_panel panel;
++ struct gpio_desc *reset_gpio;
++ struct regulator *vcc;
++ struct regulator *iovcc;
++ bool prepared;
++
++ struct dentry *debugfs;
++};
++
++static inline struct jh057n *panel_to_jh057n(struct drm_panel *panel)
++{
++ return container_of(panel, struct jh057n, panel);
++}
++
++#define dsi_generic_write_seq(dsi, seq...) do { \
++ static const u8 d[] = { seq }; \
++ int ret; \
++ ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
++ if (ret < 0) \
++ return ret; \
++ } while (0)
++
++static int jh057n_init_sequence(struct jh057n *ctx)
++{
++ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
++ struct device *dev = ctx->dev;
++ int ret;
++
++ /*
++ * Init sequence was supplied by the panel vendor. Most of the commands
++ * resemble the ST7703 but the number of parameters often don't match
++ * so it's likely a clone.
++ */
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETEXTC,
++ 0xF1, 0x12, 0x83);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETRGBIF,
++ 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00,
++ 0x00, 0x00);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETSCR,
++ 0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70,
++ 0x00);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0x30);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETEQ,
++ 0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00,
++ 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETBGP, 0x08, 0x08);
++ msleep(20);
++
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
++ dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN0, 0x02, 0x11, 0x00);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1,
++ 0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12,
++ 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
++ 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,
++ 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,
++ 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,
++ 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
++ 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP2,
++ 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++ 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,
++ 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,
++ 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
++ 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,
++ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x0A,
++ 0xA5, 0x00, 0x00, 0x00, 0x00);
++ dsi_generic_write_seq(dsi, ST7703_CMD_SETGAMMA,
++ 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, 0x37,
++ 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, 0x11,
++ 0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41,
++ 0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10,
++ 0x11, 0x18);
++ msleep(20);
++
++ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
++ if (ret < 0) {
++ DRM_DEV_ERROR(dev, "Failed to exit sleep mode: %d\n", ret);
++ return ret;
++ }
++ /* Panel is operational 120 msec after reset */
++ msleep(60);
++ ret = mipi_dsi_dcs_set_display_on(dsi);
++ if (ret)
++ return ret;
++
++ DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
++ return 0;
++}
++
++static int jh057n_enable(struct drm_panel *panel)
++{
++ struct jh057n *ctx = panel_to_jh057n(panel);
++ int ret;
++
++ ret = jh057n_init_sequence(ctx);
++ if (ret < 0) {
++ DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
++ ret);
++ return ret;
++ }
++
++ return 0;
++}
++
++static int jh057n_disable(struct drm_panel *panel)
++{
++ struct jh057n *ctx = panel_to_jh057n(panel);
++ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
++
++ return mipi_dsi_dcs_set_display_off(dsi);
++}
++
++static int jh057n_unprepare(struct drm_panel *panel)
++{
++ struct jh057n *ctx = panel_to_jh057n(panel);
++
++ if (!ctx->prepared)
++ return 0;
++
++ regulator_disable(ctx->iovcc);
++ regulator_disable(ctx->vcc);
++ ctx->prepared = false;
++
++ return 0;
++}
++
++static int jh057n_prepare(struct drm_panel *panel)
++{
++ struct jh057n *ctx = panel_to_jh057n(panel);
++ int ret;
++
++ if (ctx->prepared)
++ return 0;
++
++ DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
++ ret = regulator_enable(ctx->vcc);
++ if (ret < 0) {
++ DRM_DEV_ERROR(ctx->dev,
++ "Failed to enable vcc supply: %d\n", ret);
++ return ret;
++ }
++ ret = regulator_enable(ctx->iovcc);
++ if (ret < 0) {
++ DRM_DEV_ERROR(ctx->dev,
++ "Failed to enable iovcc supply: %d\n", ret);
++ goto disable_vcc;
++ }
++
++ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
++ usleep_range(20, 40);
++ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
++ msleep(20);
++
++ ctx->prepared = true;
++
++ return 0;
++
++disable_vcc:
++ regulator_disable(ctx->vcc);
++ return ret;
++}
++
++static const struct drm_display_mode default_mode = {
++ .hdisplay = 720,
++ .hsync_start = 720 + 90,
++ .hsync_end = 720 + 90 + 20,
++ .htotal = 720 + 90 + 20 + 20,
++ .vdisplay = 1440,
++ .vsync_start = 1440 + 20,
++ .vsync_end = 1440 + 20 + 4,
++ .vtotal = 1440 + 20 + 4 + 12,
++ .vrefresh = 60,
++ .clock = 75276,
++ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
++ .width_mm = 65,
++ .height_mm = 130,
++};
++
++static int jh057n_get_modes(struct drm_panel *panel,
++ struct drm_connector *connector)
++{
++ struct jh057n *ctx = panel_to_jh057n(panel);
++ struct drm_display_mode *mode;
++
++ mode = drm_mode_duplicate(connector->dev, &default_mode);
++ if (!mode) {
++ DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u\n",
++ default_mode.hdisplay, default_mode.vdisplay,
++ default_mode.vrefresh);
++ return -ENOMEM;
++ }
++
++ drm_mode_set_name(mode);
++
++ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
++ connector->display_info.width_mm = mode->width_mm;
++ connector->display_info.height_mm = mode->height_mm;
++ drm_mode_probed_add(connector, mode);
++
++ return 1;
++}
++
++static const struct drm_panel_funcs jh057n_drm_funcs = {
++ .disable = jh057n_disable,
++ .unprepare = jh057n_unprepare,
++ .prepare = jh057n_prepare,
++ .enable = jh057n_enable,
++ .get_modes = jh057n_get_modes,
++};
++
++static int allpixelson_set(void *data, u64 val)
++{
++ struct jh057n *ctx = data;
++ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
++
++ DRM_DEV_DEBUG_DRIVER(ctx->dev, "Setting all pixels on\n");
++ dsi_generic_write_seq(dsi, ST7703_CMD_ALL_PIXEL_ON);
++ msleep(val * 1000);
++ /* Reset the panel to get video back */
++ drm_panel_disable(&ctx->panel);
++ drm_panel_unprepare(&ctx->panel);
++ drm_panel_prepare(&ctx->panel);
++ drm_panel_enable(&ctx->panel);
++
++ return 0;
++}
++
++DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
++ allpixelson_set, "%llu\n");
++
++static void jh057n_debugfs_init(struct jh057n *ctx)
++{
++ ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
++
++ debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,
++ &allpixelson_fops);
++}
++
++static void jh057n_debugfs_remove(struct jh057n *ctx)
++{
++ debugfs_remove_recursive(ctx->debugfs);
++ ctx->debugfs = NULL;
++}
++
++static int jh057n_probe(struct mipi_dsi_device *dsi)
++{
++ struct device *dev = &dsi->dev;
++ struct jh057n *ctx;
++ int ret;
++
++ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
++ if (!ctx)
++ return -ENOMEM;
++
++ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
++ if (IS_ERR(ctx->reset_gpio)) {
++ DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
++ return PTR_ERR(ctx->reset_gpio);
++ }
++
++ mipi_dsi_set_drvdata(dsi, ctx);
++
++ ctx->dev = dev;
++
++ dsi->lanes = 4;
++ dsi->format = MIPI_DSI_FMT_RGB888;
++ dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
++ MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
++
++ ctx->vcc = devm_regulator_get(dev, "vcc");
++ if (IS_ERR(ctx->vcc)) {
++ ret = PTR_ERR(ctx->vcc);
++ if (ret != -EPROBE_DEFER)
++ DRM_DEV_ERROR(dev,
++ "Failed to request vcc regulator: %d\n",
++ ret);
++ return ret;
++ }
++ ctx->iovcc = devm_regulator_get(dev, "iovcc");
++ if (IS_ERR(ctx->iovcc)) {
++ ret = PTR_ERR(ctx->iovcc);
++ if (ret != -EPROBE_DEFER)
++ DRM_DEV_ERROR(dev,
++ "Failed to request iovcc regulator: %d\n",
++ ret);
++ return ret;
++ }
++
++ drm_panel_init(&ctx->panel, dev, &jh057n_drm_funcs,
++ DRM_MODE_CONNECTOR_DSI);
++
++ ret = drm_panel_of_backlight(&ctx->panel);
++ if (ret)
++ return ret;
++
++ drm_panel_add(&ctx->panel);
++
++ ret = mipi_dsi_attach(dsi);
++ if (ret < 0) {
++ DRM_DEV_ERROR(dev,
++ "mipi_dsi_attach failed (%d). Is host ready?\n",
++ ret);
++ drm_panel_remove(&ctx->panel);
++ return ret;
++ }
++
++ DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
++ default_mode.hdisplay, default_mode.vdisplay,
++ default_mode.vrefresh,
++ mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
++
++ jh057n_debugfs_init(ctx);
++ return 0;
++}
++
++static void jh057n_shutdown(struct mipi_dsi_device *dsi)
++{
++ struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
++ int ret;
++
++ ret = drm_panel_unprepare(&ctx->panel);
++ if (ret < 0)
++ DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
++ ret);
++
++ ret = drm_panel_disable(&ctx->panel);
++ if (ret < 0)
++ DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n",
++ ret);
++}
++
++static int jh057n_remove(struct mipi_dsi_device *dsi)
++{
++ struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
++ int ret;
++
++ jh057n_shutdown(dsi);
++
++ ret = mipi_dsi_detach(dsi);
++ if (ret < 0)
++ DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
++ ret);
++
++ drm_panel_remove(&ctx->panel);
++
++ jh057n_debugfs_remove(ctx);
++
++ return 0;
++}
++
++static const struct of_device_id jh057n_of_match[] = {
++ { .compatible = "rocktech,jh057n00900" },
++ { /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, jh057n_of_match);
++
++static struct mipi_dsi_driver jh057n_driver = {
++ .probe = jh057n_probe,
++ .remove = jh057n_remove,
++ .shutdown = jh057n_shutdown,
++ .driver = {
++ .name = DRV_NAME,
++ .of_match_table = jh057n_of_match,
++ },
++};
++module_mipi_dsi_driver(jh057n_driver);
++
++MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");
++MODULE_DESCRIPTION("DRM driver for Rocktech JH057N00900 MIPI DSI panel");
++MODULE_LICENSE("GPL v2");
+--
+2.26.2
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 02:48:14 +0000